ENS Event | |
|---|---|
15:02 Sep 29, 2009 | |
| Title | Part 21 Involving a Pump Shaft Coupling Failure |
| Event Description | A service water pump failed during operation on 9/29/2009. Upon disassembly it was detected that a shaft coupling installed on a repaired service water pump failed while in service. The failed coupling was replaced with a new coupling of a different heat code. According to the manufacturer, the threaded coupling design was only supplied for Palisades.
HydroAire conducted a root cause analysis on the issue. They and their heat treat vendor, BodyCote, reviewed all of their safety related work records for the past three years and monitored heat treating of recent orders. Records showed that this anomaly occurred only on one piece and it is a random isolated incident." The vendor believes that corrective actions that they and BodyCote have taken "should remove concerns in the future heat treatments and past review of records confirms adequacy of the heat treat at least for the past three years. Notified R3DO (Stone) and Part 21 Group via email. |
| Where | |
|---|---|
| Hydroaire Chicago, Illinois (NRC Region 3) | |
| Organization: | Hydroaire |
| Reporting | |
| 10 CFR 21.21 | |
| Time - Person (Reporting Time:+1873.15 h78.048 days <br />11.15 weeks <br />2.566 months <br />) | |
| Opened: | Sesha Giri 17:11 Dec 16, 2009 |
| NRC Officer: | Vince Klco |
| Last Updated: | Feb 22, 2010 |
| 45574 - NRC Website | |
Hydroaire with 10 CFR 21.21, Notification of failure to comply or existence of a defect and its evaluation | |
WEEKMONTHYEARENS 471622011-08-10T05:00:00010 August 2011 05:00:00
[Table view]10 CFR 21.21, Notification of failure to comply or existence of a defect and its evaluation Part 21 - Pump Shaft Coupling Failure ENS 455742009-09-29T15:02:00029 September 2009 15:02:00 10 CFR 21.21, Notification of failure to comply or existence of a defect and its evaluation Part 21 Involving a Pump Shaft Coupling Failure 2011-08-10T05:00:00 | |